巴音布鲁克天鹅湖保护区湿地植物群落研究

巴音布鲁克天鹅湖湿地植被类型在分类上属典型高寒沼泽草甸,可分为5个型。植被以湿生和水生植物为主构成,由5个层片结构组成。水沼泽植物群落的均匀度和优势度指数均高于丘状沼泽。植物群落物种重要性的大小依次为:黑穗苔草(Carex melanantha)>细刺苔草(Carex microglochn)>嵩草(Kobresia filifola)>囊状苔草(Carexvesicula)>马先蒿(Pedieularis albevti)>水麦冬(Triglochin plustre)>报春花(Primula sibirica)。在巴音布鲁克高寒沼泽草地植物群落中,水沼泽草地的鲜草产量高于丘状沼泽,分别为646.2g·m^-2和496.7g·m^-2,平均鲜草量571.5g·m^-2。群落的地下生物量较大,为13608.8 g·m^-2,0cm¹⁰cm土层中的地下生物量约占69.89%,10cm²⁰cm的地下生物量约占15.9%,20cm³⁰cm的地下生物量约占7.27%,30cm⁵⁰cm的地下生物量仅占6.94%。植物种类以莎草科植物较多(占总生物量的78.7%),大部分属于下繁性草类。物种组成简单,平方米植物种为13种,一般8种~11种。

Vegetation community of the wetland in Bayinbu Lake swan conservation of Xijiang

Community structure,plant species diversity and productivity of wetland vegetation community were studied in the Bayinbuluke swan conservation region,Xinjiang.The results showed that wetland vegetation is composed of aquatic plants and wetland plants,the number of plant species of cyperacese are more than others families.Simpson index of aquatic swamp is higher than mound swamp.Important value decreased in the order of Carex melanantha,Carex microglochn,Kobresia,filifola,Carex,vesicular,Pedicular,albevti,Triglochin,plustre,Primulasibirica,Average productivity of wet grass of mound swamp is 571.5 g·m^-2,and wet grass of aquatic swamp is 646.2g·m^-2.Below ground Biomass is 13608.8g·m^-2,which is mostly distributed in the 0～10 cm depth of the soil.The cover rate of aquatic meadow is 100%,and the number of species is between 8 and 11 for community of aquatic meadow.